Theodore c



BEST AVAILABLE. COPY T. c. PRoUTY.

PUMP FOR SPEEDQMETERS. APPLICATION FILED'MAY 29. |920. Reissued July 20, 1920. 7 y 14,922'.

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THEODORE c. rRoU'rY, oRHnRMosA-RRACH, CALIFORNIA, AssreNoR, BYNEsNn ASSIGNMENTS, To vAN vsacxLRN srnEDoMErnR COMPANY, or WILMINGTON, DELAWARE, A CORPORATION or, DELAWARE. l

PUMP FOR SPEEDOMRTERS.

Specification of Reissued Letterslatent. Resgued July 20, 1920.

criginarappucaton mea :March as, 1914, serian. No. 827,911. Renewed August e, 1917, serial N0.

184,787. Original No. 1,256,829, -dated February 1920.. 'serial Nb. 385,366.

. To all whom it may concern:`

Be it known that I, THEODORE C. PROUTY,

a citizen of the United States, residing at Hermosa Beach, in the county of Los Angeles andState of California, have invented certain new and useful Improvements in Bumps for Speedometeraof which the following is a specification.

This invention relates to improvements in pumps for speedometers, and has for its obect to provide an improved pump comprising a pair of intermeshingogs or pumping1 v own in genera elements ofa type well pumping construction.

My invention further comprises a new and improved arrangement for supporting and driving such pumping elements.

These and other objects will Ibe set ortn 1r and illustrated in the following specification 4and accompanying drawings, in which;

11 and outlet 12, as shown in Fi 3. This casing is providedwith the en' plate 13- closing one end thereof and the end plate 14 closing the other end thereof. The end plate 13 is provided with the supporting axle 13 lformed integral therewith and adapted to i extend through the casing and seat in the yaperture 148L in the end plate 14. The end ,plate 13 is further provided with the in- Awardly extending bearing portion 13b centrally bored or apertured, as indicated by numeral 13C. A number` of cross apertures 13d extend from the outer side of this bear- ,ing portion 13h from the central bore or .aperture 13, as shown for example inv Fig.

.19, 1918. Application for reissue led May 29,

4. A bearing plate 15 is carried by the end plate 14v and comprises a detachable portion thereof, as indicatedin Fig. 4., This bearing plate 15 is provided with the inwardly extending bearing portion 15L similar in construction tb bearing '13b and apertured or bored as indicated by numeral 15", the bore or aperture 15 belng in alinement with aperture 13C. Similar cross apertures '15 are provided in bearing portion 15a. The

inner -extremities of these bearing portions 15-13b are spaced apart a suitable distance -gfor a purpose to be explained below. A

rotatable cog o r pump element 16 is rotatably mounted upon the axle 113, as shown -in Fig. 1, and is provided with the usual form of teeth 163. 'A similar'rotating element 17 is rotatably mounted upon the bearings 13b between the end plates 13414, as

shown in Fi .'1, this cogA being centrally apertured Aor ored as indicated by numeral 17a to rotatably fit upon bearing portions 151--13b and having teeth 17 b meshing with .the teeth of pump element 16. The pumpmg element 17 is the driving or actuating element and to provide for driving the same I utilize the shaft 18v extending through the apertures 15b-13b and journaled therein. This shaft 18 carries a collar 19 intermediate its extremities, this collar, when the device is assembled, being located between the inner ends of the bearings 15h-13b in the bore 17'a of the pumping element 17, this collar closely fitting thesaid bore; In the embodiment shown in the drawings, I construct this collar of comparatively soft metal such as alloy or the like, shrunk on or otherwise securely attached to the shaft 18. I then, by means of a A,set or punch indent portions of the pumping elements 17 into said collar 19, as indicated by numeral 17, see Fig. 3.

In constructing and arranging my device I preferably leave spaces or chambers 2O bel tween eac-h side of the collar 19 and the ad. jacent extremity of the bearing portions 13"-15a.` In these chambers or spaces I pack grease, oil orother suitable lubricant when the device is assembled,nd as is Well known-to those skilled in the art,n a certain amountof this lubricant will work its way I have found that the actuated pump ele- .ment 16, as I term it, is suitably journaled by the construction shown and complications do not arise s ince it is driven by the actuating element 17.- Dijiiculty has been found, however, in suitably supporting the latter element in such a vform of pump, especially when used in connection with a fluid actuated speedometer, and I have found that by use of my invention, as set forth and shown herein, I`provide a substantial gear bearing surface for the actuating element 17, at the same time providing ajsimilar bearing support or journal for the driving shaft while also arranging forpositive andefiicient driving relation between said shaft and actuat- -ingpump element. At the same time my construction and arrangement enables Ame -to lreadily assemble'and disassemble the entiredevice, as will be 'apparent-from examination of the drawings and reading of the specification, it being merely necessaryto re` move end plate 13, together with bearing plate 15 to permit the entire removal of the rotatable pum ing and shaft mechanism.'

'3. In a deviceof the class described, the combination vof rotatable-pumping mechacentric axial bores, shaft mechanism rotatably journaled in the bore of said bearing mechanism, and a collar carried by said rotatable. shaft and located in the axial chamber of said rotatable pumping mechanism, and operativelyT connecting said pumping and shaft mechanism together.

4. In a device of the class described, the combination of rotatable pumping mechanism provided with axial bores, bearings extending into each end of the axial bore of said pumping mechanism upon which said i pumping mechanism is rotatably mounted and constructed to leave a centrally' located axial chamber in said umping mechanism,

a drive shaftiand a co lar mounted on and j secured to said shaft in the central axial t chamber of said pumping mechanism and finto which portions of said pumping mechanism arelembedded so as to form an operaf:

shaft and tive connection between said puin ing'mechamsm.

casing, end plates-.for said casing, said end n a device of the` class described, a

5 along the rod 18 and along-the outer surface nism provided with an axial bore, bearing 70-y of the bearings 13H-.15?L between such vbearmechanism extendin 'vinto the bore at each ings and the inner periphery of the aperture` `end Vof' Said rotatab e pumping mechanism 17al of pumping element 17.4 This lubricating arranged to leave Aa chamber at or near the effect is enhanced by the use of cross apercenter of the bore of the rotatable pumping 10- tures 15e-13d. mechanism and in turn provided with con- 75' pump structure from the'casing.- plates :being provided with'inwardly extend- While I have shown and described my .de- 'ing bearing portions, Said bearing portions E vice with more or less lparticularity, I do not being bored or apertur'ed, a longitudinally wish to be restricted to such-showing or debored pumping member rotatabl mounted scription beyond the scope of the appended on said bearing portions and a rive shaft claims.

What claim is 1. In a device of the class described, th

combination of rotatable vHuid actuating mechanism, bearing mechanism' upon which said rotatable mechanism is rotatably mounted and provided withl a concentric axial bore,

said4 pumping member and mounted in thel aperture therein.

6."In adevice of the class described, a

casing, end plates for said casing, said end; plates being provided with inwardly extend-f ing bearing portions, said bearing portions! shaft mechanism extending through and journaled in said axial bore, a-collar secured to said shaft and havin portions of said rotata le fluid actuating mechanism, whereby 4said rotatable uid actuating mechanism and said shaft'rotate in unison.

' 2. In a device of the class described, the combinationl of rotatable pumping mechanismprovided with a longitudinal axial bore, hearing mechanism extending .into the axial bore of said pumping mechanism land upon which said pumping mechanism is rotatably mounted, said bearing I mechanism being provided with a.' concentric axial bore, shaft mechanism rotatably journaled in the axial bore of said bearing mechanism, and

a collar mounted'on said shaft' mechanism,

andlocated in thev axial bore of the pumpembedded therein lbo 'umping member rotatably mounted' on sai bearing portions, a shaft extending through the apertures in saidbearing portions and j ournaled therein, said shaft bein provided with a collar engaging saidpump ing member and mounted in the apert'ur therein, said collar being spaced from and ,locatedbetween said bearing portions where--I by'spaces are afforded for oil or reasetd lubncate said pumping member an shaft.' 'Y 7. In a device of the class' described, .a casing, end plates for said casing, said end plates being provided with inwardly extend;- ing bearing portions, said bearing portions being bored or apertured, a longitudinallyy bored pumping memberrotatably mounted bein bored orapertured, a longitudinallyl on said bearing portions, a shaft extending through the apertures in said bearing portionsend journaled therein, said shaft being provided With a collar-engaging said pumping member and mounted in the aperture therein, said collar being spaced from and located between said bearing portions Whereby spaces are aiforded for oil or 'gi'eseto lubricate seid pumping member and shaft., said bearings being cross .apertured to per- 10 mit access of said oil or grease.

In testimony whereof I have 1subscribed my name.

. THEODORE C. PROUTY. I 

